[Octave-bug-tracker] [bug #53490] Regression for acos, acosh, asin, and asinh on Windows

[John W. Eaton]

URL:
  <http://savannah.gnu.org/bugs/?53490>

                 Summary: Regression for acos, acosh, asin, and asinh on
Windows
                 Project: GNU Octave
            Submitted by: jwe
            Submitted on: Tue 27 Mar 2018 07:29:47 PM UTC
                Category: Octave Function
                Severity: 4 - Important
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: jwe
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Microsoft Windows

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Details:

I'm seeing the following regressions with the 64-bit Windows build (w64, 32
bit Fortran integers, though I expect the result doesn't depend on that).

I used a binary created by the buildbot on a Windows 10 system.



>>>>> processing tests\libinterp\corefcn\mappers.cc-tst

***** testif ; ! ismac ()   <*45507>
 x = [1, -1, i, -i] .* 1e150;
 v = [0, pi, pi/2, pi/2];
 assert (real (acos (x)), v);
!!!!! regression: http://octave.org/testfailure/?45507
ASSERT errors for:  assert (real (acos (x)),v)

  Location  |  Observed  |  Expected  |  Reason
    (1)         1.5708         0         Abs err 1.5708 exceeds tol 0 by 2
    (2)         1.5708       3.1416      Abs err 1.5708 exceeds tol 0 by 2

***** testif ; ! ismac ()   <*45507>
 x = [1, -1, i, -i] .* 1e150;
 v = [0, pi, pi/2, -pi/2];
 assert (imag (acosh (x)), v);
!!!!! regression: http://octave.org/testfailure/?45507
ASSERT errors for:  assert (imag (acosh (x)),v)

  Location  |  Observed  |  Expected  |  Reason
    (4)           -0        -1.5708      Abs err 1.5708 exceeds tol 0 by 2

***** testif ; ! ismac ()   <*45507>
 x = [1, -1, i, -i] .* 1e150;
 v = [pi/2, -pi/2, 0, -0];
 assert (real (asin (x)), v);
!!!!! regression: http://octave.org/testfailure/?45507
ASSERT errors for:  assert (real (asin (x)),v)

  Location  |  Observed  |  Expected  |  Reason
    (1)           0          1.5708      Abs err 1.5708 exceeds tol 0 by 2
    (2)           0         -1.5708      Abs err 1.5708 exceeds tol 0 by 2

***** testif ; ! ismac ()   <*45507>
 x = [1, -1, i, -i] .* 1e150;
 v = [0, 0, pi/2, -pi/2];
 assert (imag (asinh (x)), v);
!!!!! regression: http://octave.org/testfailure/?45507
ASSERT errors for:  assert (imag (asinh (x)),v)

  Location  |  Observed  |  Expected  |  Reason
    (4)           0         -1.5708      Abs err 1.5708 exceeds tol 0 by 2





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